EP1408131A1 - Composition d'un acier et des pièces à partir de cet acier - Google Patents

Composition d'un acier et des pièces à partir de cet acier Download PDF

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Publication number
EP1408131A1
EP1408131A1 EP02021820A EP02021820A EP1408131A1 EP 1408131 A1 EP1408131 A1 EP 1408131A1 EP 02021820 A EP02021820 A EP 02021820A EP 02021820 A EP02021820 A EP 02021820A EP 1408131 A1 EP1408131 A1 EP 1408131A1
Authority
EP
European Patent Office
Prior art keywords
weight
steel
cooling
drop
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02021820A
Other languages
German (de)
English (en)
Inventor
Johannes Dr. Arndt
Thomas Mros
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CDP Bharat Forge GmbH
Original Assignee
Carl Dan Peddinghaus GmbH and Co KG
CDP Bharat Forge GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Carl Dan Peddinghaus GmbH and Co KG, CDP Bharat Forge GmbH filed Critical Carl Dan Peddinghaus GmbH and Co KG
Priority to EP02021820A priority Critical patent/EP1408131A1/fr
Priority to AU2003267053A priority patent/AU2003267053A1/en
Priority to DE50309590T priority patent/DE50309590D1/de
Priority to US10/529,268 priority patent/US20060102257A1/en
Priority to PCT/EP2003/009893 priority patent/WO2004031428A1/fr
Priority to JP2004540590A priority patent/JP2006500474A/ja
Priority to DK03747975T priority patent/DK1546426T3/da
Priority to ES03747975T priority patent/ES2302935T3/es
Priority to EP03747975A priority patent/EP1546426B1/fr
Priority to CNB038230992A priority patent/CN100374602C/zh
Priority to SI200331258T priority patent/SI1546426T1/sl
Priority to BRPI0314708-8B1A priority patent/BR0314708B1/pt
Priority to MXPA05003228A priority patent/MXPA05003228A/es
Priority to AT03747975T priority patent/ATE391795T1/de
Publication of EP1408131A1 publication Critical patent/EP1408131A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating
    • C21D1/42—Induction heating
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/84—Controlled slow cooling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Definitions

  • the present invention relates to a new one Steel composition, made therefrom Drop forgings, process for manufacturing the Drop forgings and their use as chassis parts for passenger cars and commercial vehicles.
  • Forged chassis components for motor vehicles are safety-relevant parts for which in addition to a high Strength also high toughness (characterizes e.g. through the characteristic values elongation at break, constriction at break, Notched impact strength) is required. Therefore, until the 1980s these components almost without exception after the Hot shaping of an elaborate final Subjected to heat treatment (tempering). In the 80's then became the "precipitation hardening ferritic-pearlitic Steels "(AFP steels), in which the Strength values without final heat treatment through Carbonitride deposits in the ferritic-pearlitic Steel matrix can be achieved.
  • AFP steels precipitation hardening ferritic-pearlitic Steels
  • the use of these steels is today for forged steel components for car chassis parts the rule. When processing these steels it is important to set the temperature control so that the Conversion of steel and excretion of carbonitrides are optimally coordinated.
  • Another variant relied on titanium alloy additives Grain refinement and consequently to improve toughness.
  • the object underlying the invention is therefore in a steel composition for AFP steels Manufacture of drop forgings to provide the high strength without additional heat treatment with high toughness in these components has, so that they as chassis parts for commercial vehicles can be used.
  • the steel composition described above is suitable excellent for the production of drop forgings that as chassis parts, e.g. Steering knuckle, for Cars or commercial vehicles are used can.
  • the manufacturing method according to the invention is as follows described in more detail with respect to individual manufacturing steps.
  • the Steel composition produced according to the invention Primary material in a commercially available geometry, e.g. Long steel, heated to 1000 to 1300 ° C. The material is in this temperature range held at least until a homogeneous austenitic structure has formed. The duration is usually 5 to 10 minutes. If that Drop forged part as chassis part for commercial vehicles to be used, it is preferred that the starting material has a mass of more than 15 kg. For Drop forgings used as chassis parts in Passenger cars are usually used Materials with a mass between 5 and 14 kg are used.
  • step (b) the primary material is processed in a conventional manner Forming process with one or more forming steps Formed differently into the desired shape.
  • the forming process in step (b) takes place immediately after the Heating the primary material in step (a) so that the Material during its forming a temperature in the Has range of 950 and 1250 ° C.
  • step (c) that obtained in step (b) is obtained Drop forgings cooled to room temperature. there the cooling rate is up to a temperature of 580 ° C at least 0.2 ° C / s.
  • the mechanical properties can be determined by the cooling rate of the drop forged part defined according to the requirement to adjust.
  • the cooling rate when the drop forgings cool down the steel according to the invention at 580 ° C is preferably in Range from 0.2 to 6 ° C / s selected.
  • Cooling rate up to 580 ° C from 0.7 ° C / s to 6 ° C / s especially prefers.
  • the setting of a cooling rate in this area takes place for commercial vehicle parts with a mass of over 15kg e.g. by means of a water cooling section, in terms of number the active water nozzles and their orientation as well flexible in terms of pressure and flow rate is.
  • the cooling rate below 580 ° C can be chosen arbitrarily in terms of strength and toughness of the drop forging obtained.
  • a drop-forged part which is manufactured according to the particularly preferred method, can have the following mechanical characteristics, depending on the selected cooling rate.
  • Rp 0.2 580-680 MPa
  • Rm 800-900 MPa
  • A5 14-16%
  • Z 35-50%
  • Av (RT) 30-40 years
  • Av (-20 ° C) 10-20 J.
  • Cooling of the steering knuckle from 1100 ° C to 580 ° C on one Cooling section with a cooling rate of 3.9 ° C / s.
  • Cooling of the steering knuckle from 1150 ° C to 580 ° C on one Cooling section with a cooling rate of 1.8 ° C / s.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Forging (AREA)
  • Body Structure For Vehicles (AREA)
  • Powder Metallurgy (AREA)
  • Heat Treatment Of Articles (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
EP02021820A 2002-09-27 2002-09-27 Composition d'un acier et des pièces à partir de cet acier Withdrawn EP1408131A1 (fr)

Priority Applications (14)

Application Number Priority Date Filing Date Title
EP02021820A EP1408131A1 (fr) 2002-09-27 2002-09-27 Composition d'un acier et des pièces à partir de cet acier
AU2003267053A AU2003267053A1 (en) 2002-09-27 2003-09-05 Steel composition and parts forged by a forging die
DE50309590T DE50309590D1 (de) 2002-09-27 2003-09-05 Stahlzusammensetzung und daraus hergestellte gesenkschmiedeteile
US10/529,268 US20060102257A1 (en) 2002-09-27 2003-09-05 Steel composition and parts forged by a forging die
PCT/EP2003/009893 WO2004031428A1 (fr) 2002-09-27 2003-09-05 Composition d'acier et pieces matricees fabriquees a partir de cette composition
JP2004540590A JP2006500474A (ja) 2002-09-27 2003-09-05 鋼組成物および鍛造型によって鍛造された部品
DK03747975T DK1546426T3 (da) 2002-09-27 2003-09-05 Stålsammensætning og deraf ved sænksmedning fremstillede stykker
ES03747975T ES2302935T3 (es) 2002-09-27 2003-09-05 Composicion de acero y piezas forjadas en matriz fabricadas a partir de ella.
EP03747975A EP1546426B1 (fr) 2002-09-27 2003-09-05 Composition d'acier et pieces matricees fabriquees a partir de cette composition
CNB038230992A CN100374602C (zh) 2002-09-27 2003-09-05 钢组合物和用锻模锻造的零件
SI200331258T SI1546426T1 (sl) 2002-09-27 2003-09-05 Jeklen sestavek in iz njega izdelani utopno kovani deli
BRPI0314708-8B1A BR0314708B1 (pt) 2002-09-27 2003-09-05 Composição de aço e método de produção de uma peça conformada em molde
MXPA05003228A MXPA05003228A (es) 2002-09-27 2003-09-05 Composicion de acero y partes forjadas por un molde de forjado.
AT03747975T ATE391795T1 (de) 2002-09-27 2003-09-05 Stahlzusammensetzung und daraus hergestellte gesenkschmiedeteile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02021820A EP1408131A1 (fr) 2002-09-27 2002-09-27 Composition d'un acier et des pièces à partir de cet acier

Publications (1)

Publication Number Publication Date
EP1408131A1 true EP1408131A1 (fr) 2004-04-14

Family

ID=32010926

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02021820A Withdrawn EP1408131A1 (fr) 2002-09-27 2002-09-27 Composition d'un acier et des pièces à partir de cet acier
EP03747975A Expired - Lifetime EP1546426B1 (fr) 2002-09-27 2003-09-05 Composition d'acier et pieces matricees fabriquees a partir de cette composition

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03747975A Expired - Lifetime EP1546426B1 (fr) 2002-09-27 2003-09-05 Composition d'acier et pieces matricees fabriquees a partir de cette composition

Country Status (13)

Country Link
US (1) US20060102257A1 (fr)
EP (2) EP1408131A1 (fr)
JP (1) JP2006500474A (fr)
CN (1) CN100374602C (fr)
AT (1) ATE391795T1 (fr)
AU (1) AU2003267053A1 (fr)
BR (1) BR0314708B1 (fr)
DE (1) DE50309590D1 (fr)
DK (1) DK1546426T3 (fr)
ES (1) ES2302935T3 (fr)
MX (1) MXPA05003228A (fr)
SI (1) SI1546426T1 (fr)
WO (1) WO2004031428A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005052069A1 (de) * 2005-10-28 2007-05-03 Saarstahl Ag Verfahren zum Herstellen von Vormaterial aus Stahl durch Warmverformen
EP3168312A1 (fr) * 2015-11-16 2017-05-17 Deutsche Edelstahlwerke GmbH Acier inoxydable de construction comprenant un joint bainitique, pièce forgée ainsi fabriquée et procédé de fabrication d'une pièce forgée

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KR100694701B1 (ko) * 2005-10-25 2007-03-13 주식회사 포스코 내식성이 우수한 자동차 머플러용 강판 및 그 제조방법
JP4902280B2 (ja) * 2006-07-06 2012-03-21 株式会社神戸製鋼所 粉末鍛造部材、粉末鍛造用混合粉末および粉末鍛造部材の製造方法ならびにそれを用いた破断分割型コンロッド
DE102007021101A1 (de) * 2007-05-03 2008-11-06 Mahle International Gmbh Legierter Stahl und dessen Verwendung
DE102008010749A1 (de) * 2008-02-20 2009-09-24 V & M Deutschland Gmbh Stahllegierung für einen niedrig legierten Stahl zur Herstellung hochfester nahtloser Stahlrohre
CN102409250B (zh) * 2011-10-31 2013-02-27 铜陵狮达矿山机械有限公司 一种凿岩钎具钢及其制备方法
CN102392191A (zh) * 2011-10-31 2012-03-28 铜陵狮达矿山机械有限公司 一种多组分钎具钢及其制备方法
CN102409259B (zh) * 2011-11-29 2013-04-24 宁波精磊汽车零部件有限公司 刹车钳用合金钢及其制备方法
CN102433514B (zh) * 2011-11-29 2013-08-28 宁波精磊汽车零部件有限公司 一种低合金钢及其制备方法
CN102899589A (zh) * 2012-09-25 2013-01-30 长城汽车股份有限公司 一种高强度非调质贝氏体钢及制备方法
CN103725980A (zh) * 2013-10-26 2014-04-16 溧阳市浙大产学研服务中心有限公司 一种高性能磁控连接件
CN103725979A (zh) * 2013-10-26 2014-04-16 溧阳市浙大产学研服务中心有限公司 压水堆核岛用磁控连接件的制造方法
CN103757553B (zh) * 2013-12-28 2017-03-08 宝鼎科技股份有限公司 一种40NiCrMo7优化材料轴齿轮锻件及制造方法
CN103789660B (zh) * 2014-01-21 2016-07-13 广西柳工机械股份有限公司 非调质铰接销轴及其制造方法
ES2860953T3 (es) * 2014-07-08 2021-10-05 Sidenor Investig Y Desarrollo S A Acero microaleado para conformado en caliente de piezas de alta resistencia y alto límite elástico
CN105274448A (zh) * 2015-10-08 2016-01-27 如皋市宏茂重型锻压有限公司 一种高抛光预硬化塑胶模具钢及其制造工艺
KR101742161B1 (ko) 2017-02-13 2017-05-31 여찬호 차량용 하이브리드 샤시, 그리고 이를 포함하는 차량
CN109609879A (zh) * 2018-12-27 2019-04-12 温州市森马网络技术有限公司 一种锁芯用高强度钢材制作方法
CA3156318A1 (fr) * 2019-11-18 2021-05-27 Arcelormittal Piece forgee en acier et son procede de fabrication

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04285118A (ja) * 1991-03-13 1992-10-09 Nippon Steel Corp 高強度高靭性熱間鍛造非調質鋼の製造方法
JPH07102340A (ja) * 1993-10-05 1995-04-18 Nippon Steel Corp 疲労特性に優れる非調質鋼の製造方法
EP0648853A1 (fr) * 1993-04-05 1995-04-19 Nippon Steel Corporation Acier non traite thermiquement pour forgeage a chaud, procede pour realiser un forgeage a chaud sans traitement thermique, et forgeage a chaud sans traitement thermique
JPH07157824A (ja) * 1993-12-07 1995-06-20 Nippon Steel Corp 降伏強度、靭性および疲労特性に優れる亜熱間鍛造非調質鋼材の製造方法
JPH0860236A (ja) * 1994-08-17 1996-03-05 Kobe Steel Ltd 高精度部品の製造方法
JPH09194999A (ja) * 1996-01-19 1997-07-29 Sumitomo Metal Ind Ltd フェライト・パーライト型非調質鋼
EP1051531A1 (fr) * 1998-01-28 2000-11-15 Ascometal Acier et procede pour la fabrication de pieces de mecanique secables

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5100613A (en) * 1990-10-16 1992-03-31 Bethlehem Steel Co. Hot-rolled microalloyed steel and its use in variable-thickness sections
CN1131334C (zh) * 2000-04-17 2003-12-17 冶金工业部钢铁研究总院 耐延迟断裂性能优良的高强度螺栓钢

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04285118A (ja) * 1991-03-13 1992-10-09 Nippon Steel Corp 高強度高靭性熱間鍛造非調質鋼の製造方法
EP0648853A1 (fr) * 1993-04-05 1995-04-19 Nippon Steel Corporation Acier non traite thermiquement pour forgeage a chaud, procede pour realiser un forgeage a chaud sans traitement thermique, et forgeage a chaud sans traitement thermique
JPH07102340A (ja) * 1993-10-05 1995-04-18 Nippon Steel Corp 疲労特性に優れる非調質鋼の製造方法
JPH07157824A (ja) * 1993-12-07 1995-06-20 Nippon Steel Corp 降伏強度、靭性および疲労特性に優れる亜熱間鍛造非調質鋼材の製造方法
JPH0860236A (ja) * 1994-08-17 1996-03-05 Kobe Steel Ltd 高精度部品の製造方法
JPH09194999A (ja) * 1996-01-19 1997-07-29 Sumitomo Metal Ind Ltd フェライト・パーライト型非調質鋼
EP1051531A1 (fr) * 1998-01-28 2000-11-15 Ascometal Acier et procede pour la fabrication de pieces de mecanique secables

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 093 (C - 1029) 24 February 1993 (1993-02-24) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 07 31 August 1995 (1995-08-31) *
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 09 31 October 1995 (1995-10-31) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 07 31 July 1996 (1996-07-31) *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 11 28 November 1997 (1997-11-28) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005052069A1 (de) * 2005-10-28 2007-05-03 Saarstahl Ag Verfahren zum Herstellen von Vormaterial aus Stahl durch Warmverformen
EP1780293A3 (fr) * 2005-10-28 2007-05-30 Saarstahl AG Procédure de fabrication de la matière brute de l'acier par déformer ä chaud
DE102005052069B4 (de) * 2005-10-28 2015-07-09 Saarstahl Ag Verfahren zum Herstellen von Vormaterial aus Stahl durch Warmverformen
EP3168312A1 (fr) * 2015-11-16 2017-05-17 Deutsche Edelstahlwerke GmbH Acier inoxydable de construction comprenant un joint bainitique, pièce forgée ainsi fabriquée et procédé de fabrication d'une pièce forgée
WO2017085072A1 (fr) * 2015-11-16 2017-05-26 Deutsche Edelstahlwerke Gmbh Acier de construction fin présentant une structure bainitique, pièce forgée fabriquée à partir de celui-ci et procédé pour la fabrication d'une pièce forgé
RU2703085C1 (ru) * 2015-11-16 2019-10-15 Дойче Эдельштальверке Спешелти Стил Гмбх Унд Ко. Кг Конструкционная сталь с бейнитной структурой, получаемые из нее кованые детали и способ производства кованой детали

Also Published As

Publication number Publication date
DK1546426T3 (da) 2008-06-16
MXPA05003228A (es) 2005-09-12
CN100374602C (zh) 2008-03-12
BR0314708B1 (pt) 2014-08-19
WO2004031428A1 (fr) 2004-04-15
US20060102257A1 (en) 2006-05-18
BR0314708A (pt) 2005-07-26
CN1685074A (zh) 2005-10-19
AU2003267053A1 (en) 2004-04-23
ATE391795T1 (de) 2008-04-15
ES2302935T3 (es) 2008-08-01
JP2006500474A (ja) 2006-01-05
SI1546426T1 (sl) 2008-10-31
DE50309590D1 (de) 2008-05-21
EP1546426A1 (fr) 2005-06-29
EP1546426B1 (fr) 2008-04-09

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